Device for cutting embroidery along an embroidered edge.



J. WOLTER & A. BELZ. DEVIGE FOR CUTTING EMBROIDERY ALONG AN EMBROIDERED EDGE.

APPLICATION FILED MAY4, 1911.

1909,8379 v Patented Aug. 12, 1913.

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JOSEF WOL'IER, 0F RORSCHACH, AND AUGUST BELZ, OF UNTER-GOLDACH, SWITZER- LAND, ASSIGNORS TO THE FIRM 0F RAPID A.-Gr., OF ST. GALLEN, SWITZERLAND.

DEVICE FOR CUTTING EMBROIDERY ALONG AN EMBROIDERED EDGE.

To all whom it may concern Be it known that we, Josnr l/VoL'rER, a subject of the Queen of the Netherlands, residing at Rorschach, Switzerland, and AUeUsT BELZ, a citizen of the Republic of Switzerland, residing at Untergoldach, Switzerland, have invented certain new and useful Improvements in Devices for Cutting Embroidery Along an Embroidered Edge; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

This invention relates to a device for cutting embroidery along an embroidered edge.

In the devices hitherto in use the knife is arranged so, that the distance from the table can not be changed during the time of out ting. By this reason embroideries having backgrounds of different thickness, cannot be cut by such machines, at least, if there are not added special devices for adjustment of the knife.

According to our invention embroidery of any thickness can be cut out in a short time without being damaged.

In the accompanying drawing the construction according to this invention is illustrated by way of examples.

In the said drawing Figure 1 is a side view of the first example, Fig. 2 a section on line XX of Fig. 1, Fig. 3 a side view of the second example, Fig. 4 a plan of the same.

The plate 2 for the fabric is mounted on a support 1, Figs. 1 and 2. The shaft 4 of the knife carrier 5 slides in a guide-box 3 of the support. To the knife carrier is secured by means of a clamping plate 7 and screws 8, 9 the oblique knife 10. The edge of the latter in its lowest position does not touch quite the plate. A lever 11 above the knife carrier is secured to the shaft 4 and to the front part of the lever 11 is pivoted a finger 12. The lever 11 is provided with an arm 13 to which is pivoted a lever 14. One end of the latter rests on the plate 2, the other end touching the arm 15 of a blade 17 which is pivoted at 16 to the lever 11. A spring 18, acting on the arm 15, presses the Specification of Letters Patent.

Application filed May 4, 1911.

Patented Aug. 12,1913.

Serial No. 625,077.

blade downward into an opening in the plate 2.

To the guide-box 3 is connected a bracket 19 for the bearing 20 of the rod 21, the upper end of which 1s supported by an arm 22, the latter being secured by a screw to the shaft 4. The rod 21, the lower end of which is fastened to the lever 11, is provided with a pin 23, sliding in the guide 24 in the bearing 20. The rod 21 is to be raised and lowered by means of the curved lever 25, which is pivoted to the bearing 20 and acts on-the pin 23. By turning the lever 25 upward the rod 21, the lever 11 and the arm 22 are lifted, causing the finger 12, the shaft 4, the knife carrier 5 and the knife 10 to be raised for the same amount.

After lifting the rod 21 the unembroidered part of the fabric is cut below the finger 12, and the rod 21 being lowered again, the embroidery is moved in direction of the arrow shown in Fig. 1, either by hand or by means of a special gear. By lowering the rod 21 the shaft 4 of the knife carrier is lowered for the same amount. When an unembroidered part of the fabric passes below the finger, the width of the slot between the knife 10 and the plate 2 is equal to or somewhat larger than the thickness of the unembroidered fabric, but always in this case the width is smaller than the thickness of the embroidered fabric.

As it is known the fabrics have large unembroidered borders. In order to bring the embroidered part of such a fabric in con nection with the knife 10, it is necessary to cut the border as far as to the edge of the embroidered part by means of the blade 17. If, by moving the fabric in the direction of the arrow, an unembroidered part of the fabric gets below the lever 14, the upper part of the latter is pressed against the vertical arm 15 of the blade 17, which is raised a little by this. By the described moving the blade cuts the fabric. As soon as the embroidery gets below the lever 14 the blade becomes raised so much, that it does not touch and cut the fabric any more.

As described above, the distance of the plate 2 from the knife 10 in the latters lowest position is smaller than the thickness of the unembroidered parts of the fabric. 11": such a part passes below the finger 12, the knife 10 becomes raised so much, that the fabric can pass under the latter without being out As soon as the embroidery touches the knife, it becomes cut along its edge and separated from the unembroidered parts, whereupon it passes above the knife.

In the example shown in Figs. 3 and 4. the shaft 4 of the knife carrier is adjustable in the support 1 and carries on its lower end a support 27 for a shaft 28, on which the knife carrier 5 is secured by screws. The knife 10 is connected to the knife carrier by means of a clamping plate 7 and screws 8, 9. A lever 29 with a finger 30 formed as a roller is mounted on the shaft 28. The finger is located relative to the edge of the blade 10 so, that, if the finger touches an unembroidered part of the fabric, only such part can pass between the plate and the knife without being cut, the embroidery, on the contrary, becomes out along its edge and separated from the unembroidered parts, whereafter it leaves the knife.

What we claim is:

1. In a device for cutting embroidery along an embroidered edge, a vertically adjustable knife, a plate arranged underneath said knife for supporting the fabric parallel to the knife edge and acting as counter-part to cooperate with the knife for cutting the embroidery, and means altering the vertical distance between the edge of the knife and said plate according to the thickness of the fabric coming in contact with said means, so that the unembroidered parts of the fabric can freely pass below the knife.

2. In a device for cutting embroidery along an embroidered edge, a shaft, a vertically adjustable knife-carrier mounted on the shaft, a knife secured to the knife carrier, a plate arranged underneath said knife for supporting the fabric parallel to the knife edge and acting as counter-part to cooperate with the knife for cutting the embroidery, and means attached to the shaft of said knife carrier, said means altering the vertical distance between the edge of the knife and the plate according to the thick ness of the fabric coming in contact with them, so that the unembroideredparts of the fabric can freely pass below the knife.

3. In a device for cutting embroidery, a knife secured to a knife carrier turning around a shaft, a fixed plate parallel to the edge of the knife and acting as counter-part to cooperate with the knife for cutting the embroidery, a finger supported by the plate, and means positively connecting the finger to the knife carrier.

4. In a device for cutting embroidery along an embroidery edge, a knife, a plate parallel to the edge of the knife,a finger supported by the plate, and vertically sliding means positively connecting the finger to the knife, substantially as described.

5. In a device for cutting embroidery along an embroidery edge, a knife, a plate parallel to the edge of the knife, a finger supported by the plate, vertically sliding means positively connecting the finger to the knife, and a spring pressing the finger against the plate, substantially as described.

6. In a device for cutting embroidery along an embroidery edge, a knife carrier, a knife secured to the knife carrier, a plate parallel to the edge of the knife, a finger supported by the plate, rods positively acting on the knife carrier and the finger, a

guide bearing in which one of the rods is movable vertically, and a spring acting on the finger and the bearing, substantially as described.

In testimony that we claim the foregoing as our invention, we have signed our names in presence of two subscribing witnesses.

JOSEF IVOLTER. AUGUST BELZ.

lVitnesses CARL GUBLER, JULIUS P. HEINZ.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

